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214813 = 1131901
BaseRepresentation
bin110100011100011101
3101220200001
4310130131
523333223
64334301
71553164
oct643435
9356601
10214813
11137435
12a4391
1376a11
14583db
15439ad
hex3471d

214813 has 4 divisors (see below), whose sum is σ = 216828. Its totient is φ = 212800.

The previous prime is 214811. The next prime is 214817. The reversal of 214813 is 318412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9604 + 205209 = 98^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 214813 - 21 = 214811 is a prime.

It is a super-2 number, since 2×2148132 = 92289249938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (54207).

2214813 is an apocalyptic number.

It is an amenable number.

214813 is a deficient number, since it is larger than the sum of its proper divisors (2015).

214813 is a wasteful number, since it uses less digits than its factorization.

214813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014.

The product of its digits is 192, while the sum is 19.

The square root of 214813 is about 463.4792336233. The cubic root of 214813 is about 59.8898906484.

The spelling of 214813 in words is "two hundred fourteen thousand, eight hundred thirteen".

Divisors: 1 113 1901 214813